Stem-winding and stem-setting watch



Dec. 4, 1923. 1,476,494

NF. 8. COOPER ET AL STEM WINDING AND STEM SETTING WATCH Filed Jan. 24. 1923 Patented Dec. 4, 1923.

UNITED STATES PATENT OFFICE.

NATHAN S. COOPER AND SAUL COOPER, OF NEW HAVEN, CONNECTICUT;

STEM-WINDING AND STEM-SETTING WATCH.

Application filed January 24, 1923. Serial No. 614,552.

To all whom it may concern:

Be it known that we, NATHAN S. Coorrm and SAUL COOPER, citizens of the United States, residing at; New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvementin Stem-Winding and Stern-Setting WVatches; and we do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in-

Fig. 1 a view in front elevation of a stemwindlng and stem-setting watch embodying our invention, with the crystal, bezel and dial removed, and the stem-winding and stem-setting mechanism shown in its normal position of readiness for winding,

Fig. 2 a similar but broken view with the stem-winding and stem-setting stem pushed inward, preparatory to setting.

Fig. 3 a perspective view of the pivotal sustaining-lever of the mechanism.

Our invention relates to an improvement in stemwinding and stem-setting watches, the object being to provide a simple, durable and reliable stem-winding and stem-setting mechanism of few parts not liable to derangement and constructed with particular reference to the means employed for sustaining the mechanism in its winding-andsetting adjustments respectively, so that it may not pass from one phase to the other, other than by the conscious effort of the user of the watch.

With these ends in view, our invention consists in a stein-winding and stem-setting watch having certain details of construction and combinations of parts as will be hereinafter described and particularly pointed out in the claim.

In carrying out our invention, as herein shown, the longitudinally-movable and rotatable winding-and-setting stem 5 is mounted in the pendant 6 of the center-band 7 of the watch-case, and provided at its outer end with a crown 8 located within the bow 9 of the pendant, the parts named being of any standard construction. At a point within the band 7, the stem is provided with a doubly-beveled, phase-sustain ing collar 10 having an upper bevel 11 and a lower bevel 12, of which the upper bevel l1 coacts with the lower bevel 13 and the lower bevel 12 co-acts with the upper bevel 14 of the doubly-beveled nose 15 of a curved arm 16 connected by a reach 17 with the upper edge of a pivotal phase-sustaining lever 18 having a bearing-hole 19, by means of which it is pivotally mounted upon the stud 20. The said stud also provides a bearing for the setting-wheel 21 of the settingtrain, which, as herein shown, comprises a stem setting-wheel 22 mounted upon the stem 5 and also a plate setting-wheel 23 turning upon a stud 24 in the front movement-plate 25. The said wheel 22, which is located at a right angle to the plane of the wheel 21, meshes thereinto only when the stem 5 is pushed inward into its setting position, as shown in Fig. 2. The wheel 23 meshes into the cannon-pinion 26, which is mounted on the center arbor 27.

The main part of the lever 18 is located upon the outer face of the front movementplate 25, which is formed with a clearanceopening 28, through which the inwardlybent reach 17 of the lever extends to permit the location of the bowed arm 16 of the lever back of the movement-plate 25, this arm being located in a plane parallel with the main part of the lever, from which the reach 17 extends inward at a right angle.

A spring 29, located upon the outer face of the plate 25, and secured to a stud therein, engages with the lower face of the reach 17 of the lever 18 and exerts a constant effort to hold one or the other of the two bcvels 13 and 14 of its doubly-beveled nose 15 in engagement with one or the other of the two bevels 11 and 12 of the collar 10 on the stem 5, as the case may be. A spring 31, mounted upon the inside of the plate 25, engages with the inner end of the stem 6 and exerts a constant efi'ort to hold the same at the limit of its outward throw, which is its normal, or winding, position.

The winding-train of the mechanism may be of any approved construction and operation, and is not shown beyond its clutchwheel 32, which is mounted in a bridge 33 and provided upon its lower face with ratchet-teeth 34 co-acting with corresponding ratchet-teeth 35, formed upon the upper face of a clutch-collar 36 secured to the extreme inner end of the stem 5, as is common in this class of watches. The wheel 32 aforesaid is maintained in constant mesh with the adjacent wheel not shownot the winding-train, which is of standard construction.

The winding-and-setting stem 5 is normally held at the limit of: its outward throw by means of the spring 31, which, as aforesaid, exerts a constant outward thrust upon its inner end. The stem is virtually locked in this position by the action of the phasesustaining lever 18, the upper bevel 14: of which is then maintained in engagement with the lower bevel 12 of the collar 10, as shown in Fig. 1. To set the watch, the stem 5 is manually pushed inward by its crown 8 with suflicient force to overcome the tension of the spring 31 and to rock the lever 18, as required, to cause its beveled nose 15 to snap over the collar 10, and thus effect the engagement of the lower bevel 13 of the said nose with the upper bevel 11 of the collar, as shown in Fig. 2, whereby the lever 18 sustains the parts in these posi tions during the setting operation, and until the stem 5 is again manually pulled out ward, by its crown 8, with sufiicient force to overcome the tension of the spring 29 and permit the doubly-beveled nose 15 of the lever 18 to again snap under the collar 10, so as to permit its upper bevel 14 to be engaged with the lower bevel 12 thereof.

The phase-sustaining lever 18 thus co-acts with the phase-sustaining collar 10 to hold or sustain the winding-and-setting mecha nism in either phase of its two adjustments.

We claim:

In a stem-winding and stem-setting watch, the combination with a movement-plate thereof having a clearance-opening, of elements oi a winding-and-setting mechanism, a winding-and-setting stem, a doubly-beveled, PlIZLSGSHSlJZIlDl-Dg collar thereupon, a pivotal, phase-sustaining lever located upon the outer face 01 the said movement-plate, and having an inwardly-extending reach passingthrough the said clearance-opening, and a doubly-beveled arm on the said reach for co-action with the bevels of the said collar, whereby the upper bevel of the said arm co-acts with the inner bevel of the collar, and vice versa, and a spring for maintaining the bevels of the arm in engagement with the bevels of the collar.

In testimony whereof, we have signed this specification in the presence of two subscribing witnesses.

NATHAN S. COOPER. SAUL COOPER. Witnesses MALCOLM P. NICHOLS, Fimonnro C. EARLE. 

